Ancillary operation

Ancillary operation is a manufacturing operation that has a large flow, discharges significant amounts of pollutants, and may not be present at every plant in a subcategory, but when present is an integral part of the aluminum forming process.


40 CFR § 467.02

Scoping language

In addition to the definitions set forth in 40 CFR part 401, the following definitions apply to this part:

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